Real-time Currency Conversion via Webhook with Google Search Parsing

This n8n workflow provides a flexible way to perform real-time currency conversions by parsing Google search results. It listens for incoming webhook requests containing a specific query, executes a Google search for the currency conversion, extracts the conversion rate, and responds to the webhook with the result.

What it does

1. Listens for Webhook Trigger: The workflow starts by waiting for an incoming HTTP POST request to a defined webhook URL.
2. Performs Google Search: It takes the query from the incoming webhook and constructs a Google search URL to find the currency conversion rate (e.g., "1 USD to EUR").
3. Fetches Search Results: An HTTP Request node is used to execute the Google search and retrieve the HTML content of the search results page.
4. Parses Conversion Rate: A Code node then processes the HTML response to extract the actual currency conversion rate. It specifically looks for a pattern in the HTML that typically displays the conversion result.
5. Responds to Webhook: Finally, the workflow sends the extracted conversion rate back to the caller of the webhook, allowing for real-time integration with other systems.

Prerequisites/Requirements

• n8n Instance: A running n8n instance (cloud or self-hosted).
• Google Search Access: The n8n instance needs to be able to make HTTP requests to Google search.
• Basic JavaScript Knowledge (Optional): For understanding or modifying the "Code" node's parsing logic.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON code.
   • In your n8n instance, click "New" in the workflows list.
   • Click the "Import from JSON" button and paste the JSON code.
   • Click "Import".
2. Activate the Workflow:
   • Ensure the workflow is activated by toggling the "Active" switch in the top right corner.
3. Get Webhook URL:
   • The "Webhook" node (named "Webhook") will automatically generate a unique URL when the workflow is activated. Copy this URL.
4. Send Requests:
   • Send an HTTP POST request to the copied Webhook URL. The request body should be JSON and contain a query field with the currency conversion you want to perform.
   • Example Request Body:

     {
       "query": "1 USD to EUR"
     }
     

   • The workflow will respond with the conversion rate.

Note: The parsing logic in the "Code" node relies on the structure of Google search results. If Google's search result page structure changes, the parsing logic might need to be updated.